Steel & Nylon Hammer For Jewelry Repair & Shaping Metal. This is a new steel and nylon hammer. Great for jewelry repair and shaping metal. Both heads can be removed for easy replacement. The length of the head measures approximately 2 1/4" (57 mm) long. The face of each head measures approximately 1/2" (13 mm) in diameter. The hammer measures approximately 7 7/8" (199.8 mm) long We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.